A mechanism is provided in a data processing system for automatic determination of b-value difference from diffusion-weighted (DW) images. The mechanism receives a series of images wherein a first image has a first b-value and a second image has an unknown b-value. The mechanism applies a generative adversarial network (GAN) model to estimate a difference between b-values in the series of images. The mechanism determines a b-value for the second image based on the first b-value and the estimated difference between b-values.
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2. The method of claim 1, wherein applying the GAN model comprises constructing a latent space with a latent variable for learning to generate a synthetic apparent diffusion coefficient (ADC) map for identifying unknown b-values in the series of DW images and a loss function based on a relationship between the ADC map and the spatial relationship between images in the series of DW images.
3. The method of claim 2, wherein constructing the latent space comprises applying encoders to the images in the series of DW images.
4. The method of claim 2, wherein the latent space comprises a latent variable and a difference value representing a difference between b-values.
5. The method of claim 1, wherein the GAN model comprises a generator, a discriminator, and an estimator.
12. The computer program product of claim 11, wherein applying the GAN model comprises constructing a latent space with a latent variable for learning to generate a synthetic apparent diffusion coefficient (ADC) map for identifying unknown b-values in the series of DW images and a loss function based on a relationship between the ADC map and the spatial relationship between images in the series of DW images.
13. The computer program product of claim 12, wherein constructing the latent space comprises applying encoders to the images in the series of DW images and wherein the latent space comprises a latent variable and a difference value representing a difference between b-values.
14. The computer program product of claim 11, wherein the GAN model comprises a generator, a discriminator, and an estimator.
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February 25, 2022
August 20, 2024
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